with the intention to do wrong can't buy guns in america. so changing the laws make people face up. >> in the end, it's about the guns because without the guns you don't have the shooting. this particular weapon, the ar-15 assault weapon has been used in the last three mass shootings, in aurora, in the shopping mall, and now in the elementary school. you have been in war zones all over the world. it's near to an m-16 machine gun, a rifle, as you can get, isn't it? >> it is. i can visualize the state of affairs in the classrooms because i have seen that in somalia, what is going on in syria right now, and it is about those particular weapons. i look out and realize that two years ago, i conducted a town hall just like this in the aftermath of the shooting of congresswoman gabrielle giffords and the killing of those people around her in tucson, some of the same people who were there are here today. victims, families, all people crying out for at least at the very least, a dialogue, a sensible, rational conversation, a national discussion where we're not afraid to call it like it is. and that means to b